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Cropico DO4000 Series

The Cropico DO4000 Series offers a versatile range of portable digital micro ohmmeters, designed for accurate low resistance measurement in workshops, field service, and test laboratories.

Ruggedly constructed in durable plastic cases, the DO4000 Series combines portability with advanced functionality. Key features across the range include true 4-terminal Kelvin measurement, auto/manual range selection, digital calibration, true zero capability, and automatic power-down to maximise battery life.

The DO4000, DO4001, and DO4002 models each add unique functions, ranging from temperature compensation to high-resolution measurements, ensuring a model suited for every application.

Model Options

Function

• Low resistance measurement using 4-terminal Kelvin principle
• Measuring ranges from 4 mΩ up to 4 kΩ (model dependent)
• High resolution down to 1 μΩ (DO4002)
• Digital calibration and true zero capability
• Auto/manual range selection
• Automatic temperature compensation (DO4001, DO4002)
• Temperature measurement range –50 °C to +800 °C (DO4001)
• Open circuit lead warning LED (DO4001, DO4002)
• Measuring currents up to 1 A (DO4002)
• Auto power-down for extended battery life
• Large, easy-to-read displays

Technical Specifications

General Features

  • Measurement principle: 4-terminal Kelvin method (eliminates lead resistance errors)

  • Ranging: Auto or manual

  • Calibration: Digital, secure

  • Resolution: 10 μΩ (DO4000, DO4001) / 1 μΩ (DO4002)

  • Power: Rechargeable batteries, built-in

Advanced Features by Model

  • DO4000: Practical portable micro ohmmeter, auto power-down, rugged case, 10 μΩ resolution

  • DO4001: Adds temperature compensation with preset/user coefficients, –50 °C to +800 °C range, open circuit lead warning LED

  • DO4002: High-resolution model with 1 μΩ resolution, large LCD, open circuit lead warning, 1 A measuring current

Application

  • Workshop and field low resistance measurement

  • Utilities and industrial test facilities

  • Contact resistance testing with high resolution

  • Temperature-compensated resistance measurement (DO4001)

  • Portable high-current, high-accuracy testing (DO4002)

Model Options

Model Measuring Range Resolution Temperature Compensation Temperature Measurement Max Current Key Features
DO4000 40 mΩ to 4 kΩ 10 μΩ No No 100 mA Rugged, portable, auto/manual ranging, true zero
DO4001 40 mΩ to 4 kΩ 10 μΩ Yes (Cu, Al, user set) –50 °C to +800 °C 100 mA Temp compensation, open circuit warning, statistical reliability
DO4002 4 mΩ to 400 Ω 1 μΩ Yes No 1 A High resolution, large LCD, open circuit warning
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